22643741 has 4 divisors (see below), whose sum is σ = 23255772. Its totient is φ = 22031712.

The previous prime is 22643737. The next prime is 22643759. The reversal of 22643741 is 14734622.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 13468900 + 9174841 = 3670^2 + 3029^2 .

It is a cyclic number.

It is not a de Polignac number, because 22643741 - 2² = 22643737 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22643701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 305960 + ... + 306033.

It is an arithmetic number, because the mean of its divisors is an integer number (5813943).

Almost surely, 2^22643741 is an apocalyptic number.

It is an amenable number.

22643741 is a deficient number, since it is larger than the sum of its proper divisors (612031).

22643741 is an equidigital number, since it uses as much as digits as its factorization.

22643741 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 612030.

The product of its digits is 8064, while the sum is 29.

The square root of 22643741 is about 4758.5440000067. The cubic root of 22643741 is about 282.9107128000.

The spelling of 22643741 in words is "twenty-two million, six hundred forty-three thousand, seven hundred forty-one".